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ASTM A182 Grade F5a vs. S21900 Stainless Steel

Both ASTM A182 grade F5a and S21900 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F5a and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
50
Fatigue Strength, MPa 380
380
Poisson's Ratio 0.29
0.28
Reduction in Area, % 56
57
Shear Modulus, GPa 74
78
Shear Strength, MPa 450
510
Tensile Strength: Ultimate (UTS), MPa 710
710
Tensile Strength: Yield (Proof), MPa 520
390

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 510
980
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.8
3.0
Embodied Energy, MJ/kg 24
43
Embodied Water, L/kg 69
160

Common Calculations

PREN (Pitting Resistance) 6.8
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
300
Resilience: Unit (Modulus of Resilience), kJ/m3 700
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 20
15

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.080
Chromium (Cr), % 4.0 to 6.0
19 to 21.5
Iron (Fe), % 91.4 to 95.6
59.4 to 67.4
Manganese (Mn), % 0 to 0.6
8.0 to 10
Molybdenum (Mo), % 0.44 to 0.65
0
Nickel (Ni), % 0 to 0.5
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030